In addition to
configure
and
cget
, the following
methods are supported by the Scrollbar widget:

set

Changes the viewable portion of the data, with the two arguments
being numbers between 0 and 1 representing the portions of
the data to be visible.

$scrollbar->set(0.2,0.6);

get

Returns the latest arguments to
set
.

activate

With no arguments, returns the name of the current active element.
With an argument of
arrow1
,
arrow2
, or
slider
,
changes the color of the specified element to the active foreground
color and relief type.

delta

Given a number of pixels in the first argument,
returns the fractional change needed to move
the slider that amount.

fraction

Given an x,y coordinate as the first and second arguments,
returns a number between 0 and 1 representing what fraction
of the scrollbar that coordinate would fall under.

identify

Given an x,y coordinate as the first and second arguments,
returns the name of the element at those coordinates.